A GELATIN CAPSULE USED FOR DIAGNOSIS AND TREATMENT OF DISEASE. IT CONTAINS SODIUM IODIDE-131 SOLUTION ABSORBED ONTO A PARTLY DEHYDRATED DISODIUM HYDROGEN PHOSPATE AS AN INERT CARRIER. THE MATERIAL IS MADE RADIO ACTIVE EITHER FROM BOMBARDMENT WITHIN A CYCLOTRON OR BY IRRADIATION WITHIN A NUCLEAR REACTOR. APPLICATIONS FOR USE INCLUDE THE TREATMENT OF HYPERTHYROIDISM WHERE SURGERY IS CONTRA INDICATED AND FOR THE ELIMINATION OF RESIDUAL THYROID ACTIVITY AFTER THYROIDECTOMY IN CASES OF THYROID CARCINOMA. THE CAPSULE IS GIVEN ORALLY TO A PATIENT WHERE THE SODIUM IODIDE-131 IS ABSORBED RAPIDLY INTO THE BLOODSTREAM AND CONCENTRATES IN THE THYROID, WHERE IT IS INCORPORATED INTO HORMONES WHICH ARE STORED IN THE INTRAFOLLICULAR COLLOID. THE CAPSULE IS PRESENTED WITHIN A POLYCARBONATE CONTAINER WITH A CHARCOAL DISC TO ABSORB IODINE-131. THIS CONTAINER IS ENCLOSED WITHIN A LEAD SHIELD.

CLASSIFICATION IS DETERMINED ACCORDING TO GIRS 1 AND 6. CN 284440 30 FOR COMPOUNDS OF ARTIFICIAL RADIOACTIVE ISOTOPES. NOTE 1 (a) TO SECTION VI. NOTE 6 TO CHAPTER 28.